Make Chrome work with the global menu

[probonopd]

Chrome does not show its menus in the global menu bar. Why?

In Chrome 12 https://www.omgubuntu.co.uk/2011/06/chrome-12-brings-unity-global-menu-support-and-heres-how-to-enable-it they added:

"Experimental GNOME menu bar support."

We need to figure out what happened to it and how to make it work.

[probonopd]

The issue may have to do with the fact that WM_CLIENT_LEADER is not available for Chrome windows:

xprop | grep WM_CLIENT_LEADER and click on a Chrome window. Nothing!

And none of these either: _GTK_MENUBAR_OBJECT_PATH, _GTK_APP_MENU_OBJECT_PATH, _UNITY_OBJECT_PATH.

Are these documented somewhere?

But things do get published on D-Bus by Chrome:

org/appmenu/gtk/window/0

com/canonical/menu/600001

So something seems to be half-broken?

A Gtk application with working menu has:

xprop | grep MENU
_KDE_NET_WM_APPMENU_OBJECT_PATH(STRING) = "/MenuBar/2"
_KDE_NET_WM_APPMENU_SERVICE_NAME(STRING) = "org.kde.plasma.gmenu_dbusmenu_proxy"
_GTK_MENUBAR_OBJECT_PATH(UTF8_STRING) = "/org/appmenu/gtk/window/0"

I am not sure how exactly the KDE stuff ends up there, but I do notice the presence of _GTK_MENUBAR_OBJECT_PATH which is missing in Chrome windows.

[probonopd]

Here is the code that

// Controls the Mac style menu bar on Linux desktop environments. // // Unity had a MacOS-like menu bar at the top of the screen that changed // depending on the active window. Unity has been discontinued but the menu // survived and is usually referred to as DBus AppMenu. There is support for it // in KDE Plasma in form of a widget that can be inserted into a panel.

https://github.com/chromium/chromium/blob/master/chrome/browser/ui/views/frame/dbus_appmenu.h

[probonopd]

grep -r _GTK_MENUBAR_OBJECT_PATH /usr/local/lib
Binary file /usr/local/lib/libgtk-3.so.0.2404.16 matches
Binary file /usr/local/lib/gtk-2.0/modules/libappmenu-gtk-module.so matches
Binary file /usr/local/lib/libgtk-3.so.0 matches
Binary file /usr/local/lib/libgtk-3.so matches
Binary file /usr/local/lib/gtk-3.0/modules/libappmenu-gtk-module.so matches

grep -r _GTK_MENUBAR_OBJECT_PATH /usr/local/bin
Binary file /usr/local/bin/gmenudbusmenuproxy matches

strings /usr/local/bin/gmenudbusmenuproxy | grep ^_
(...)
_GTK_UNIQUE_BUS_NAME
_GTK_APPLICATION_OBJECT_PATH
_UNITY_OBJECT_PATH
_GTK_WINDOW_OBJECT_PATH
_GTK_MENUBAR_OBJECT_PATH
_GTK_APP_MENU_OBJECT_PATH
_KDE_NET_WM_APPMENU_SERVICE_NAME
_KDE_NET_WM_APPMENU_OBJECT_PATH

I am not sure how exactly the KDE stuff ends up there, but I do notice the presence of _GTK_MENUBAR_OBJECT_PATH which is missing in Chrome windows.

Curent theory: Gtk applications are supposed to load libappmenu-gtk-module.so which is supposed to set _GTK_MENUBAR_OBJECT_PATH on the window which gmenudbusmenuproxy is supposed to convert to Qt/KDE-style menus (since Gtk and Qt and KDE do, as usual, not really agree on anything), and complement with _KDE_NET_WM_APPMENU_OBJECT_PATH?

[probonopd]

LD_DEBUG=libs chrome 2>&1 | grep -i menu
lm_find("/usr/local/share/chromium/chrome", "/usr/local/lib/gtk-3.0/modules/libappmenu-gtk-module.so")
lml_find(0x8099ce110, "/usr/local/lib/gtk-3.0/modules/libappmenu-gtk-module.so")
loading "/usr/local/lib/gtk-3.0/modules/libappmenu-gtk-module.so"
/usr/local/lib/gtk-3.0/modules/libappmenu-gtk-module.so valid_hash_sysv 1 valid_hash_gnu 1 dynsymcount 122
  0x8139e1000 .. 0x8139ebfff: /usr/local/lib/gtk-3.0/modules/libappmenu-gtk-module.so
lm_find("/usr/local/lib/gtk-3.0/modules/libappmenu-gtk-module.so", "libappmenu-gtk3-parser.so.0")
lmp_find("/usr/local/lib/gtk-3.0/modules/libappmenu-gtk-module.so")
lml_find(0x8099ce110, "libappmenu-gtk3-parser.so.0")
 Searching for "libappmenu-gtk3-parser.so.0"
lm_find("/usr/local/lib/gtk-3.0/modules/libappmenu-gtk-module.so", "/usr/local/lib")
lmp_find("/usr/local/lib/gtk-3.0/modules/libappmenu-gtk-module.so")
  Trying "/usr/local/lib/libappmenu-gtk3-parser.so.0"
  Opened "/usr/local/lib/libappmenu-gtk3-parser.so.0", fd 34
loading "/usr/local/lib/libappmenu-gtk3-parser.so.0"
/usr/local/lib/libappmenu-gtk3-parser.so.0 valid_hash_sysv 1 valid_hash_gnu 1 dynsymcount 170
  0x814921000 .. 0x814935fff: /usr/local/lib/libappmenu-gtk3-parser.so.0
relocating "/usr/local/lib/gtk-3.0/modules/libappmenu-gtk-module.so"
relocating "/usr/local/lib/libappmenu-gtk3-parser.so.0"
calling init function for /usr/local/lib/libappmenu-gtk3-parser.so.0 at 0x8149324b8
calling init function for /usr/local/lib/gtk-3.0/modules/libappmenu-gtk-module.so at 0x8139e7ad8
"g_getenv" in "libappmenu-gtk-module.so" ==> 0x809ad7f80 in "libglib-2.0.so.0"
"gdk_display_get_default" in "libappmenu-gtk-module.so" ==> 0x80dc23c10 in "libgdk-3.so.0"
"gdk_x11_display_get_type" in "libappmenu-gtk-module.so" ==> 0x80dc54590 in "libgdk-3.so.0"
"g_ascii_strcasecmp" in "libappmenu-gtk-module.so" ==> 0x809b0e060 in "libglib-2.0.so.0"
"g_get_prgname" in "libappmenu-gtk-module.so" ==> 0x809b232e0 in "libglib-2.0.so.0"
"g_strcmp0" in "libappmenu-gtk-module.so" ==> 0x809b12b30 in "libglib-2.0.so.0"
"g_settings_new" in "libappmenu-gtk-module.so" ==> 0x80a8e7fb0 in "libgio-2.0.so.0"
"g_settings_get_value" in "libappmenu-gtk-module.so" ==> 0x80a8e8360 in "libgio-2.0.so.0"
"g_variant_type_checked_" in "libappmenu-gtk-module.so" ==> 0x809b34d80 in "libglib-2.0.so.0"
"g_variant_is_of_type" in "libappmenu-gtk-module.so" ==> 0x809b24450 in "libglib-2.0.so.0"
"g_variant_iter_init" in "libappmenu-gtk-module.so" ==> 0x809b25bd0 in "libglib-2.0.so.0"
"g_variant_iter_loop" in "libappmenu-gtk-module.so" ==> 0x809b2bcb0 in "libglib-2.0.so.0"
"g_object_unref" in "libappmenu-gtk-module.so" ==> 0x809b68b90 in "libgobject-2.0.so.0"
"g_variant_unref" in "libappmenu-gtk-module.so" ==> 0x809b2ce10 in "libglib-2.0.so.0"
"g_bus_get_sync" in "libappmenu-gtk-module.so" ==> 0x80a8911e0 in "libgio-2.0.so.0"
"g_dbus_connection_call_sync" in "libappmenu-gtk-module.so" ==> 0x80a8907f0 in "libgio-2.0.so.0"
"g_slice_free1" in "libdconfsettings.so" ==> 0x809b0b4b0 in "libglib-2.0.so.0""g_variant_get_child_value" in "libappmenu-gtk-module.so" ==> 0x809b2d470 in "libglib-2.0.so.0"
"g_variant_get" in "libappmenu-gtk-module.so" ==> 0x809b2b150 in "libglib-2.0.so.0"
"g_str_equal" in "libappmenu-gtk-module.so" ==> 0x809adcb80 in "libglib-2.0.so.0"
"g_variant_iter_free" in "libappmenu-gtk-module.so" ==> 0x809b28660 in "libglib-2.0.so.0"
"gtk_settings_get_default" in "libappmenu-gtk-module.so" ==> 0x80da5c0b0 in "libgtk-3.so.0"
"gtk_settings_get_type" in "libappmenu-gtk-module.so" ==> 0x80da5b690 in "libgtk-3.so.0"
"g_object_class_find_property" in "libappmenu-gtk-module.so" ==> 0x809b68600 in "libgobject-2.0.so.0"
"g_type_check_instance_is_fundamentally_a" in "libappmenu-gtk-module.so" ==> 0x809b813a0 in "libgobject-2.0.so.0"
"g_settings_get_boolean" in "libappmenu-gtk-module.so" ==> 0x80a8e9620 in "libgio-2.0.so.0"
"g_object_set" in "libappmenu-gtk-module.so" ==> 0x809b6b1d0 in "libgobject-2.0.so.0"
"g_bus_watch_name" in "libappmenu-gtk-module.so" ==> 0x80a89f000 in "libgio-2.0.so.0"
"unity_gtk_menu_shell_set_debug" in "libappmenu-gtk-module.so" ==> 0x81492d2f0 in "libappmenu-gtk3-parser.so.0"
"unity_gtk_action_group_set_debug" in "libappmenu-gtk-module.so" ==> 0x814929530 in "libappmenu-gtk3-parser.so.0"
"gtk_widget_get_type" in "libappmenu-gtk-module.so" ==> 0x80db1c7e0 in "libgtk-3.so.0"
"g_type_class_ref" in "libappmenu-gtk-module.so" ==> 0x809b7ca50 in "libgobject-2.0.so.0"
"gtk_application_window_get_type" in "libappmenu-gtk-module.so" ==> 0x80d889650 in "libgtk-3.so.0"
"gtk_window_get_type" in "libappmenu-gtk-module.so" ==> 0x80db36290 in "libgtk-3.so.0"
"g_type_children" in "libappmenu-gtk-module.so" ==> 0x809b80a10 in "libgobject-2.0.so.0"
"g_free" in "libappmenu-gtk-module.so" ==> 0x809af4b30 in "libglib-2.0.so.0"
"gtk_menu_bar_get_type" in "libappmenu-gtk-module.so" ==> 0x80d9d35c0 in "libgtk-3.so.0"
"gtk_widget_get_screen" in "libappmenu-gtk-module.so" ==> 0x80db24aa0 in "libgtk-3.so.0"
"gdk_screen_get_rgba_visual" in "libappmenu-gtk-module.so" ==> 0x80dc343a0 in "libgdk-3.so.0"
"g_type_check_instance_cast" in "libappmenu-gtk-module.so" ==> 0x809b814b0 in "libgobject-2.0.so.0"
"gtk_window_get_type_hint" in "libappmenu-gtk-module.so" ==> 0x80db39e60 in "libgtk-3.so.0"
"gdk_wayland_display_get_type" in "libappmenu-gtk-module.so" ==> 0x80dc88ac0 in "libgdk-3.so.0"
"g_type_check_instance_is_a" in "libappmenu-gtk-module.so" ==> 0x809b81200 in "libgobject-2.0.so.0"
"g_quark_from_static_string" in "libappmenu-gtk-module.so" ==> 0x809afdeb0 in "libglib-2.0.so.0"
"g_object_get_qdata" in "libappmenu-gtk-module.so" ==> 0x809b6c720 in "libgobject-2.0.so.0"
"g_strdup_printf" in "libappmenu-gtk-module.so" ==> 0x809b0d320 in "libglib-2.0.so.0"
"gtk_widget_get_window" in "libappmenu-gtk-module.so" ==> 0x80db2e730 in "libgtk-3.so.0"
"gdk_window_get_display" in "libappmenu-gtk-module.so" ==> 0x80dc381b0 in "libgdk-3.so.0"
"gdk_x11_display_get_xdisplay" in "libappmenu-gtk-module.so" ==> 0x80dc55fd0 in "libgdk-3.so.0"
"gdk_x11_window_get_xid" in "libappmenu-gtk-module.so" ==> 0x80dc6dfd0 in "libgdk-3.so.0"
"gdk_x11_get_xatom_by_name_for_display" in "libappmenu-gtk-module.so" ==> 0x80dc64d50 in "libgdk-3.so.0"
"XGetWindowProperty" in "libappmenu-gtk-module.so" ==> 0x80a4bf340 in "libX11.so.6"
"g_slice_alloc0" in "libappmenu-gtk-module.so" ==> 0x809b0b440 in "libglib-2.0.so.0"
"g_menu_new" in "libappmenu-gtk-module.so" ==> 0x80a87cda0 in "libgio-2.0.so.0"
"g_action_group_get_type" in "libappmenu-gtk-module.so" ==> 0x80a875170 in "libgio-2.0.so.0"
"unity_gtk_action_group_new" in "libappmenu-gtk-module.so" ==> 0x814928240 in "libappmenu-gtk3-parser.so.0"
"unity_gtk_action_group_get_type" in "libappmenu-gtk3-parser.so.0" ==> 0x814928090 in "libappmenu-gtk3-parser.so.0"
"g_once_init_enter" in "libappmenu-gtk3-parser.so.0" ==> 0x809b16ae0 in "libglib-2.0.so.0"
"g_intern_static_string" in "libappmenu-gtk3-parser.so.0" ==> 0x809afe020 in "libglib-2.0.so.0"
"g_type_register_static_simple" in "libappmenu-gtk3-parser.so.0" ==> 0x809b7e6a0 in "libgobject-2.0.so.0"
"g_action_group_get_type" in "libappmenu-gtk3-parser.so.0" ==> 0x80a875170 in "libgio-2.0.so.0"
"g_type_add_interface_static" in "libappmenu-gtk3-parser.so.0" ==> 0x809b7f040 in "libgobject-2.0.so.0"
"g_once_init_leave" in "libappmenu-gtk3-parser.so.0" ==> 0x809b16b90 in "libglib-2.0.so.0"
"g_object_new" in "libappmenu-gtk3-parser.so.0" ==> 0x809b69500 in "libgobject-2.0.so.0"
"g_type_class_peek_parent" in "libappmenu-gtk3-parser.so.0" ==> 0x809b7ffc0 in "libgobject-2.0.so.0"
"g_type_check_class_cast" in "libappmenu-gtk3-parser.so.0" ==> 0x809b817d0 in "libgobject-2.0.so.0"
"g_hash_table_new_full" in "libappmenu-gtk3-parser.so.0" ==> 0x809adafe0 in "libglib-2.0.so.0"
"g_menu_model_get_type" in "libappmenu-gtk-module.so" ==> 0x80a87b890 in "libgio-2.0.so.0"
"g_dbus_connection_export_menu_model" in "libappmenu-gtk-module.so" ==> 0x80a87e7c0 in "libgio-2.0.so.0"
"g_dbus_connection_export_action_group" in "libappmenu-gtk-module.so" ==> 0x80a877660 in "libgio-2.0.so.0"
"g_dbus_connection_get_unique_name" in "libappmenu-gtk-module.so" ==> 0x80a88e210 in "libgio-2.0.so.0"
"g_utf8_strlen" in "libappmenu-gtk-module.so" ==> 0x809b1e860 in "libglib-2.0.so.0"
"XChangeProperty" in "libappmenu-gtk-module.so" ==> 0x80a4b5530 in "libX11.so.6"
"g_object_set_qdata_full" in "libappmenu-gtk-module.so" ==> 0x809b6c930 in "libgobject-2.0.so.0"
calling fini function for /usr/local/lib/gtk-3.0/modules/libappmenu-gtk-module.so at 0x8139e7aec
"__cxa_finalize" in "libappmenu-gtk-module.so" ==> 0x80df84040 in "libc.so.7"
calling fini function for /usr/local/lib/libappmenu-gtk3-parser.so.0 at 0x8149324cc
"__cxa_finalize" in "libappmenu-gtk3-parser.so.0" ==> 0x80df84040 in "libc.so.7"

[probonopd]

For comparison, here is a Gtk application where it works:

LD_DEBUG=libs system-config-printer 2>&1 | grep -i menu
lm_find("/usr/local/bin/python3.7", "/usr/local/lib/gtk-3.0/modules/libappmenu-gtk-module.so")
lml_find(0x80022d110, "/usr/local/lib/gtk-3.0/modules/libappmenu-gtk-module.so")
loading "/usr/local/lib/gtk-3.0/modules/libappmenu-gtk-module.so"
/usr/local/lib/gtk-3.0/modules/libappmenu-gtk-module.so valid_hash_sysv 1 valid_hash_gnu 1 dynsymcount 122
  0x8037e7000 .. 0x8037f1fff: /usr/local/lib/gtk-3.0/modules/libappmenu-gtk-module.so
lm_find("/usr/local/lib/gtk-3.0/modules/libappmenu-gtk-module.so", "libappmenu-gtk3-parser.so.0")
lmp_find("/usr/local/lib/gtk-3.0/modules/libappmenu-gtk-module.so")
lml_find(0x80022d110, "libappmenu-gtk3-parser.so.0")
 Searching for "libappmenu-gtk3-parser.so.0"
lm_find("/usr/local/lib/gtk-3.0/modules/libappmenu-gtk-module.so", "/usr/local/lib")
lmp_find("/usr/local/lib/gtk-3.0/modules/libappmenu-gtk-module.so")
  Trying "/usr/local/lib/libappmenu-gtk3-parser.so.0"
  Opened "/usr/local/lib/libappmenu-gtk3-parser.so.0", fd 6
loading "/usr/local/lib/libappmenu-gtk3-parser.so.0"
/usr/local/lib/libappmenu-gtk3-parser.so.0 valid_hash_sysv 1 valid_hash_gnu 1 dynsymcount 170
  0x8040d1000 .. 0x8040e5fff: /usr/local/lib/libappmenu-gtk3-parser.so.0
relocating "/usr/local/lib/gtk-3.0/modules/libappmenu-gtk-module.so"
relocating "/usr/local/lib/libappmenu-gtk3-parser.so.0"
calling init function for /usr/local/lib/libappmenu-gtk3-parser.so.0 at 0x8040e24b8
calling init function for /usr/local/lib/gtk-3.0/modules/libappmenu-gtk-module.so at 0x8037edad8
"g_getenv" in "libappmenu-gtk-module.so" ==> 0x801ac6f80 in "libglib-2.0.so.0"
"gdk_display_get_default" in "libappmenu-gtk-module.so" ==> 0x8021c7c10 in "libgdk-3.so.0"
"gdk_x11_display_get_type" in "libappmenu-gtk-module.so" ==> 0x8021f8590 in "libgdk-3.so.0"
"g_ascii_strcasecmp" in "libappmenu-gtk-module.so" ==> 0x801afd060 in "libglib-2.0.so.0"
"g_get_prgname" in "libappmenu-gtk-module.so" ==> 0x801b122e0 in "libglib-2.0.so.0"
"g_strcmp0" in "libappmenu-gtk-module.so" ==> 0x801b01b30 in "libglib-2.0.so.0"
"g_settings_new" in "libappmenu-gtk-module.so" ==> 0x801cbdfb0 in "libgio-2.0.so.0"
"g_settings_get_value" in "libappmenu-gtk-module.so" ==> 0x801cbe360 in "libgio-2.0.so.0""g_bus_get_sync" in "libdconfsettings.so" ==> 0x801c671e0 in "libgio-2.0.so.0"
"g_variant_type_checked_" in "libappmenu-gtk-module.so" ==> 0x801b23d80 in "libglib-2.0.so.0"reloc_jmpslot: *0x8007d10a8 = 0x8005f1c50
"g_variant_is_of_type" in "libappmenu-gtk-module.so" ==> 0x801b13450 in "libglib-2.0.so.0"
"g_variant_iter_init" in "libappmenu-gtk-module.so" ==> 0x801b14bd0 in "libglib-2.0.so.0"
"g_variant_iter_loop" in "libappmenu-gtk-module.so" ==> 0x801b1acb0 in "libglib-2.0.so.0"
"g_object_unref" in "libappmenu-gtk-module.so" ==> 0x8019e6b90 in "libgobject-2.0.so.0"
"g_variant_unref" in "libappmenu-gtk-module.so" ==> 0x801b1be10 in "libglib-2.0.so.0"
"g_bus_get_sync" in "libappmenu-gtk-module.so" ==> 0x801c671e0 in "libgio-2.0.so.0"
"g_signal_connect_data" in "libdconfsettings.so" ==> 0x8019f5480 in "libgobject-2.0.so.0""g_dbus_connection_call_sync" in "libappmenu-gtk-module.so" ==> 0x801c667f0 in "libgio-2.0.so.0"
"g_variant_get_child_value" in "libappmenu-gtk-module.so" ==> 0x801b1c470 in "libglib-2.0.so.0"
"g_variant_get" in "libappmenu-gtk-module.so" ==> 0x801b1a150 in "libglib-2.0.so.0"
"g_str_equal" in "libappmenu-gtk-module.so" ==> 0x801acbb80 in "libglib-2.0.so.0"
"g_variant_iter_free" in "libappmenu-gtk-module.so" ==> 0x801b17660 in "libglib-2.0.so.0"
"gtk_settings_get_default" in "libappmenu-gtk-module.so" ==> 0x803e5c0b0 in "libgtk-3.so.0"
"gtk_settings_get_type" in "libappmenu-gtk-module.so" ==> 0x803e5b690 in "libgtk-3.so.0"
"g_object_class_find_property" in "libappmenu-gtk-module.so" ==> 0x8019e6600 in "libgobject-2.0.so.0"
"g_type_check_instance_is_fundamentally_a" in "libappmenu-gtk-module.so" ==> 0x8019ff3a0 in "libgobject-2.0.so.0"
"g_settings_get_boolean" in "libappmenu-gtk-module.so" ==> 0x801cbf620 in "libgio-2.0.so.0"
"g_object_set" in "libappmenu-gtk-module.so" ==> 0x8019e91d0 in "libgobject-2.0.so.0"
"g_bus_watch_name" in "libappmenu-gtk-module.so" ==> 0x801c75000 in "libgio-2.0.so.0"
"unity_gtk_menu_shell_set_debug" in "libappmenu-gtk-module.so" ==> 0x8040dd2f0 in "libappmenu-gtk3-parser.so.0"
"unity_gtk_action_group_set_debug" in "libappmenu-gtk-module.so" ==> 0x8040d9530 in "libappmenu-gtk3-parser.so.0"
"gtk_widget_get_type" in "libappmenu-gtk-module.so" ==> 0x803f1c7e0 in "libgtk-3.so.0"
"g_type_class_ref" in "libappmenu-gtk-module.so" ==> 0x8019faa50 in "libgobject-2.0.so.0"
"gtk_application_window_get_type" in "libappmenu-gtk-module.so" ==> 0x803c89650 in "libgtk-3.so.0"
"gtk_window_get_type" in "libappmenu-gtk-module.so" ==> 0x803f36290 in "libgtk-3.so.0"
"g_type_children" in "libappmenu-gtk-module.so" ==> 0x8019fea10 in "libgobject-2.0.so.0"
"g_free" in "libappmenu-gtk-module.so" ==> 0x801ae3b30 in "libglib-2.0.so.0"
"gtk_menu_bar_get_type" in "libappmenu-gtk-module.so" ==> 0x803dd35c0 in "libgtk-3.so.0"
"g_menu_model_get_type" in "libgtk-3.so.0" ==> 0x801c51890 in "libgio-2.0.so.0"
"gtk_widget_get_screen" in "libappmenu-gtk-module.so" ==> 0x803f24aa0 in "libgtk-3.so.0"
"gdk_screen_get_rgba_visual" in "libappmenu-gtk-module.so" ==> 0x8021d83a0 in "libgdk-3.so.0"
"g_type_check_instance_cast" in "libappmenu-gtk-module.so" ==> 0x8019ff4b0 in "libgobject-2.0.so.0"
"gtk_window_get_type_hint" in "libappmenu-gtk-module.so" ==> 0x803f39e60 in "libgtk-3.so.0"
"gdk_wayland_display_get_type" in "libappmenu-gtk-module.so" ==> 0x80222cac0 in "libgdk-3.so.0"
"g_type_check_instance_is_a" in "libappmenu-gtk-module.so" ==> 0x8019ff200 in "libgobject-2.0.so.0"
"gtk_widget_get_settings" in "libappmenu-gtk-module.so" ==> 0x803f29970 in "libgtk-3.so.0"
"g_object_get" in "libappmenu-gtk-module.so" ==> 0x8019e92c0 in "libgobject-2.0.so.0"
"gtk_widget_get_window" in "libappmenu-gtk-module.so" ==> 0x803f2e730 in "libgtk-3.so.0"
"g_quark_from_static_string" in "libappmenu-gtk-module.so" ==> 0x801aeceb0 in "libglib-2.0.so.0"
"g_object_get_qdata" in "libappmenu-gtk-module.so" ==> 0x8019ea720 in "libgobject-2.0.so.0"
"g_strdup_printf" in "libappmenu-gtk-module.so" ==> 0x801afc320 in "libglib-2.0.so.0"
"gdk_window_get_display" in "libappmenu-gtk-module.so" ==> 0x8021dc1b0 in "libgdk-3.so.0"
"gdk_x11_display_get_xdisplay" in "libappmenu-gtk-module.so" ==> 0x8021f9fd0 in "libgdk-3.so.0"
"gdk_x11_window_get_xid" in "libappmenu-gtk-module.so" ==> 0x802211fd0 in "libgdk-3.so.0"
"gdk_x11_get_xatom_by_name_for_display" in "libappmenu-gtk-module.so" ==> 0x802208d50 in "libgdk-3.so.0"
"XGetWindowProperty" in "libappmenu-gtk-module.so" ==> 0x8024fe340 in "libX11.so.6"
"g_slice_alloc0" in "libappmenu-gtk-module.so" ==> 0x801afa440 in "libglib-2.0.so.0"
"g_menu_new" in "libappmenu-gtk-module.so" ==> 0x801c52da0 in "libgio-2.0.so.0"
"g_action_group_get_type" in "libappmenu-gtk-module.so" ==> 0x801c4b170 in "libgio-2.0.so.0"
"unity_gtk_action_group_new" in "libappmenu-gtk-module.so" ==> 0x8040d8240 in "libappmenu-gtk3-parser.so.0"
"unity_gtk_action_group_get_type" in "libappmenu-gtk3-parser.so.0" ==> 0x8040d8090 in "libappmenu-gtk3-parser.so.0"
"g_once_init_enter" in "libappmenu-gtk3-parser.so.0" ==> 0x801b05ae0 in "libglib-2.0.so.0"
"g_intern_static_string" in "libappmenu-gtk3-parser.so.0" ==> 0x801aed020 in "libglib-2.0.so.0"
"g_type_register_static_simple" in "libappmenu-gtk3-parser.so.0" ==> 0x8019fc6a0 in "libgobject-2.0.so.0"
"g_action_group_get_type" in "libappmenu-gtk3-parser.so.0" ==> 0x801c4b170 in "libgio-2.0.so.0"
"g_type_add_interface_static" in "libappmenu-gtk3-parser.so.0" ==> 0x8019fd040 in "libgobject-2.0.so.0"
"g_once_init_leave" in "libappmenu-gtk3-parser.so.0" ==> 0x801b05b90 in "libglib-2.0.so.0"
"g_object_new" in "libappmenu-gtk3-parser.so.0" ==> 0x8019e7500 in "libgobject-2.0.so.0"
"g_type_class_peek_parent" in "libappmenu-gtk3-parser.so.0" ==> 0x8019fdfc0 in "libgobject-2.0.so.0"
"g_type_check_class_cast" in "libappmenu-gtk3-parser.so.0" ==> 0x8019ff7d0 in "libgobject-2.0.so.0"
"g_hash_table_new_full" in "libappmenu-gtk3-parser.so.0" ==> 0x801ac9fe0 in "libglib-2.0.so.0"
"g_menu_model_get_type" in "libappmenu-gtk-module.so" ==> 0x801c51890 in "libgio-2.0.so.0"
"g_dbus_connection_export_menu_model" in "libappmenu-gtk-module.so" ==> 0x801c547c0 in "libgio-2.0.so.0"
"g_dbus_connection_export_action_group" in "libappmenu-gtk-module.so" ==> 0x801c4d660 in "libgio-2.0.so.0"
"g_dbus_connection_get_unique_name" in "libappmenu-gtk-module.so" ==> 0x801c64210 in "libgio-2.0.so.0"
"g_utf8_strlen" in "libappmenu-gtk-module.so" ==> 0x801b0d860 in "libglib-2.0.so.0"
"XChangeProperty" in "libappmenu-gtk-module.so" ==> 0x8024f4530 in "libX11.so.6"
"g_object_set_qdata_full" in "libappmenu-gtk-module.so" ==> 0x8019ea930 in "libgobject-2.0.so.0"
"gtk_widget_get_toplevel" in "libappmenu-gtk-module.so" ==> 0x803f2a480 in "libgtk-3.so.0"
"gtk_menu_shell_get_type" in "libappmenu-gtk-module.so" ==> 0x803ddadd0 in "libgtk-3.so.0"
"unity_gtk_menu_shell_new" in "libappmenu-gtk-module.so" ==> 0x8040db260 in "libappmenu-gtk3-parser.so.0"
"g_menu_model_get_type" in "libappmenu-gtk3-parser.so.0" ==> 0x801c51890 in "libgio-2.0.so.0"
"gtk_settings_get_default" in "libappmenu-gtk3-parser.so.0" ==> 0x803e5c0b0 in "libgtk-3.so.0"
"g_signal_connect_data" in "libappmenu-gtk3-parser.so.0" ==> 0x8019f5480 in "libgobject-2.0.so.0"
"g_object_get" in "libappmenu-gtk3-parser.so.0" ==> 0x8019e92c0 in "libgobject-2.0.so.0"
"g_type_check_instance_cast" in "libappmenu-gtk3-parser.so.0" ==> 0x8019ff4b0 in "libgobject-2.0.so.0"
"g_quark_from_static_string" in "libappmenu-gtk3-parser.so.0" ==> 0x801aeceb0 in "libglib-2.0.so.0"
"g_object_set_qdata_full" in "libappmenu-gtk3-parser.so.0" ==> 0x8019ea930 in "libgobject-2.0.so.0"
"unity_gtk_action_group_connect_shell" in "libappmenu-gtk-module.so" ==> 0x8040d8fd0 in "libappmenu-gtk3-parser.so.0"
"unity_gtk_menu_shell_get_type" in "libappmenu-gtk3-parser.so.0" ==> 0x8040db130 in "libappmenu-gtk3-parser.so.0"
"g_object_ref" in "libappmenu-gtk3-parser.so.0" ==> 0x8019e6a90 in "libgobject-2.0.so.0"
"g_menu_append_section" in "libappmenu-gtk-module.so" ==> 0x801c53110 in "libgio-2.0.so.0"
"g_slist_append" in "libappmenu-gtk-module.so" ==> 0x801afb610 in "libglib-2.0.so.0"
"g_signal_connect_data" in "libappmenu-gtk-module.so" ==> 0x8019f5480 in "libgobject-2.0.so.0"
"g_log" in "libappmenu-gtk-module.so" ==> 0x801ae4450 in "libglib-2.0.so.0"
"gtk_widget_queue_resize" in "libappmenu-gtk-module.so" ==> 0x803f20bf0 in "libgtk-3.so.0"
"g_hash_table_size" in "libappmenu-gtk3-parser.so.0" ==> 0x801acb940 in "libglib-2.0.so.0"
"g_malloc_n" in "libappmenu-gtk3-parser.so.0" ==> 0x801ae3bd0 in "libglib-2.0.so.0"
"g_hash_table_iter_init" in "libappmenu-gtk3-parser.so.0" ==> 0x801aca080 in "libglib-2.0.so.0"
"g_ptr_array_new_with_free_func" in "libappmenu-gtk3-parser.so.0" ==> 0x801aa8700 in "libglib-2.0.so.0"
"gtk_container_get_type" in "libappmenu-gtk3-parser.so.0" ==> 0x803ce0130 in "libgtk-3.so.0"
"gtk_container_get_children" in "libappmenu-gtk3-parser.so.0" ==> 0x803ce3700 in "libgtk-3.so.0"
"gtk_menu_item_get_submenu" in "libappmenu-gtk3-parser.so.0" ==> 0x803dd6d90 in "libgtk-3.so.0"
"g_signal_emit_by_name" in "libappmenu-gtk3-parser.so.0" ==> 0x8019f8c60 in "libgobject-2.0.so.0"
"gtk_menu_item_get_label" in "libappmenu-gtk3-parser.so.0" ==> 0x803dd7c10 in "libgtk-3.so.0"
"gtk_menu_item_get_type" in "libappmenu-gtk3-parser.so.0" ==> 0x803dd60e0 in "libgtk-3.so.0"
"gtk_label_get_type" in "libappmenu-gtk3-parser.so.0" ==> 0x803da9e40 in "libgtk-3.so.0"
"g_type_check_instance_is_fundamentally_a" in "libappmenu-gtk3-parser.so.0" ==> 0x8019ff3a0 in "libgobject-2.0.so.0"
"g_type_is_a" in "libappmenu-gtk3-parser.so.0" ==> 0x8019f9fe0 in "libgobject-2.0.so.0"
"g_type_check_instance_is_a" in "libappmenu-gtk3-parser.so.0" ==> 0x8019ff200 in "libgobject-2.0.so.0"
"gtk_container_forall" in "libappmenu-gtk3-parser.so.0" ==> 0x803ce3490 in "libgtk-3.so.0"
"g_ptr_array_add" in "libappmenu-gtk3-parser.so.0" ==> 0x801aa9080 in "libglib-2.0.so.0"
"g_list_free" in "libappmenu-gtk3-parser.so.0" ==> 0x801ad7ec0 in "libglib-2.0.so.0"
"g_sequence_new" in "libappmenu-gtk3-parser.so.0" ==> 0x801af5900 in "libglib-2.0.so.0"
"gtk_widget_get_type" in "libappmenu-gtk3-parser.so.0" ==> 0x803f1c7e0 in "libgtk-3.so.0"
"gtk_widget_get_visible" in "libappmenu-gtk3-parser.so.0" ==> 0x803f27110 in "libgtk-3.so.0"
"gtk_tearoff_menu_item_get_type" in "libappmenu-gtk3-parser.so.0" ==> 0x803c4c700 in "libgtk-3.so.0"
"g_sequence_append" in "libappmenu-gtk3-parser.so.0" ==> 0x801af5fc0 in "libglib-2.0.so.0"
"unity_gtk_action_group_connect_shell" in "libappmenu-gtk3-parser.so.0" ==> 0x8040d8fd0 in "libappmenu-gtk3-parser.so.0"
"g_sequence_get_begin_iter" in "libappmenu-gtk3-parser.so.0" ==> 0x801af5b80 in "libglib-2.0.so.0"
"g_sequence_iter_is_end" in "libappmenu-gtk3-parser.so.0" ==> 0x801af8350 in "libglib-2.0.so.0"
"g_sequence_get" in "libappmenu-gtk3-parser.so.0" ==> 0x801af8020 in "libglib-2.0.so.0"
"gtk_radio_menu_item_get_type" in "libappmenu-gtk3-parser.so.0" ==> 0x803e27850 in "libgtk-3.so.0"
"gtk_separator_menu_item_get_type" in "libappmenu-gtk3-parser.so.0" ==> 0x803e5aba0 in "libgtk-3.so.0"
"g_strdup" in "libappmenu-gtk3-parser.so.0" ==> 0x801afc150 in "libglib-2.0.so.0"
"g_hash_table_contains" in "libappmenu-gtk3-parser.so.0" ==> 0x801acafd0 in "libglib-2.0.so.0"
"g_free" in "libappmenu-gtk3-parser.so.0" ==> 0x801ae3b30 in "libglib-2.0.so.0"
"g_hash_table_insert" in "libappmenu-gtk3-parser.so.0" ==> 0x801acab40 in "libglib-2.0.so.0"
"g_action_group_action_added" in "libappmenu-gtk3-parser.so.0" ==> 0x801c4bd70 in "libgio-2.0.so.0"
"g_strdup_printf" in "libappmenu-gtk3-parser.so.0" ==> 0x801afc320 in "libglib-2.0.so.0"
"g_sequence_iter_next" in "libappmenu-gtk3-parser.so.0" ==> 0x801af84b0 in "libglib-2.0.so.0"
"g_sequence_get_length" in "libappmenu-gtk3-parser.so.0" ==> 0x801af8130 in "libglib-2.0.so.0"
"g_ptr_array_new_full" in "libappmenu-gtk3-parser.so.0" ==> 0x801aa8790 in "libglib-2.0.so.0"
"g_menu_model_get_n_items" in "libappmenu-gtk3-parser.so.0" ==> 0x801c51a60 in "libgio-2.0.so.0"
"g_sequence_get_iter_at_pos" in "libappmenu-gtk3-parser.so.0" ==> 0x801af8160 in "libglib-2.0.so.0"
"g_sequence_get_end_iter" in "libappmenu-gtk3-parser.so.0" ==> 0x801af5bd0 in "libglib-2.0.so.0"
"g_sequence_iter_get_position" in "libappmenu-gtk3-parser.so.0" ==> 0x801af8430 in "libglib-2.0.so.0"
"g_sequence_iter_move" in "libappmenu-gtk3-parser.so.0" ==> 0x801af8590 in "libglib-2.0.so.0"
"gtk_menu_shell_get_type" in "libappmenu-gtk3-parser.so.0" ==> 0x803ddadd0 in "libgtk-3.so.0"
"gtk_image_menu_item_get_type" in "libappmenu-gtk3-parser.so.0" ==> 0x803c34b60 in "libgtk-3.so.0"
"gtk_label_get_use_underline" in "libappmenu-gtk3-parser.so.0" ==> 0x803dae100 in "libgtk-3.so.0"
"gtk_image_get_type" in "libappmenu-gtk3-parser.so.0" ==> 0x803d9f2f0 in "libgtk-3.so.0"
"g_variant_new_string" in "libappmenu-gtk3-parser.so.0" ==> 0x801b151f0 in "libglib-2.0.so.0"
"g_variant_ref_sink" in "libappmenu-gtk3-parser.so.0" ==> 0x801b1bfe0 in "libglib-2.0.so.0"
"gtk_check_menu_item_get_type" in "libappmenu-gtk3-parser.so.0" ==> 0x803ccbe80 in "libgtk-3.so.0"
"gtk_menu_item_get_accel_path" in "libappmenu-gtk3-parser.so.0" ==> 0x803dd7aa0 in "libgtk-3.so.0"
"gtk_widget_list_accel_closures" in "libappmenu-gtk3-parser.so.0" ==> 0x803f23ed0 in "libgtk-3.so.0"
"gdk_window_move_resize" in "libappmenu-gtk-module.so" ==> 0x8021e4420 in "libgdk-3.so.0"
"g_hash_table_lookup" in "libappmenu-gtk3-parser.so.0" ==> 0x801aca840 in "libglib-2.0.so.0"
"g_strcmp0" in "libappmenu-gtk3-parser.so.0" ==> 0x801b01b30 in "libglib-2.0.so.0"
"g_variant_new_boolean" in "libappmenu-gtk3-parser.so.0" ==> 0x801b13350 in "libglib-2.0.so.0"
"gtk_widget_is_sensitive" in "libappmenu-gtk3-parser.so.0" ==> 0x803f242f0 in "libgtk-3.so.0"
"g_sequence_lookup" in "libappmenu-gtk3-parser.so.0" ==> 0x801af7ce0 in "libglib-2.0.so.0"
"gtk_image_menu_item_get_use_stock" in "libappmenu-gtk3-parser.so.0" ==> 0x803c35140 in "libgtk-3.so.0"
"gtk_accel_map_lookup_entry" in "libappmenu-gtk3-parser.so.0" ==> 0x803c7b7c0 in "libgtk-3.so.0"
"gtk_accelerator_name" in "libappmenu-gtk3-parser.so.0" ==> 0x803c78df0 in "libgtk-3.so.0"
"gtk_check_menu_item_get_draw_as_radio" in "libappmenu-gtk3-parser.so.0" ==> 0x803ccc650 in "libgtk-3.so.0"
"gtk_accel_group_from_accel_closure" in "libappmenu-gtk3-parser.so.0" ==> 0x803c78090 in "libgtk-3.so.0"
"gtk_accel_group_find" in "libappmenu-gtk3-parser.so.0" ==> 0x803c77d00 in "libgtk-3.so.0"
"gtk_check_menu_item_get_active" in "libappmenu-gtk3-parser.so.0" ==> 0x803ccc3b0 in "libgtk-3.so.0"
"g_param_spec_get_name" in "libappmenu-gtk3-parser.so.0" ==> 0x8019ec550 in "libgobject-2.0.so.0"
"g_intern_string" in "libappmenu-gtk3-parser.so.0" ==> 0x801aecfd0 in "libglib-2.0.so.0"
"g_sequence_search" in "libappmenu-gtk3-parser.so.0" ==> 0x801af79b0 in "libglib-2.0.so.0"
"g_sequence_iter_prev" in "libappmenu-gtk3-parser.so.0" ==> 0x801af8520 in "libglib-2.0.so.0"
"g_menu_model_items_changed" in "libappmenu-gtk3-parser.so.0" ==> 0x801c51bf0 in "libgio-2.0.so.0"

[probonopd]

The source code of libappmenu-gtk-module.so is at https://github.com/rilian-la-te/vala-panel-appmenu/. From comparing the two cases above, it seems like with Chrome the last thing that happens is XChangeProperty in gtk_widget_set_x11_property_string, followed by g_object_set_qdata_full? So it all ends somewhere around here?

[probonopd]

What is a "Unity Object Path", after all, is it the same as a "Gtk Menu Bar Object Path", and where is this documented?

[probonopd]

Fwiw, Google Chrome does work with KDE Plasma's Global menu in KDE neon devedition...

[grahamperrin]

Suggestion: documentation

Either:

1. link from https://github.com/helloSystem/hello/wiki/Status#what-does-not-work-yet to here; or
2. reduce the need to maintain wiki pages – people can find their way to issues such as this through the https://github.com/helloSystem/hello#contributing direction to help wanted

[probonopd]

https://github.com/helloSystem/hello/wiki/Status#what-does-not-work-yet should eventually give way to a proper changelog. What is the easiest way to maintain one?

[probonopd]

Note that https://www.youtube.com/watch?v=Qe_guKtmIy0 shows Chrome with global menus using dde-globalmenu-service (not on FreeBSD though).

When killing helloSystem Menu and killing helloSystem gmenudbusmenuproxy and then running dde-globalmenu-service on helloSystem, you can see that it does interact with the menus of Gtk applications such as system-config-printer but not with those of Chromium. This leads me to suspect that it is something about the FreeBSD Chromium package that makes the global menus not work there? Maybe a build time option?

https://www.freshports.org/www/chromium says:

===> The following configuration options are available for chromium-87.0.4280.88:
     CODECS=on: Compile and enable patented codecs like H.264
     CUPS=on: CUPS printing system support
     DEBUG=off: Build with debugging support
     DRIVER=on: Install chromedriver
     KERBEROS=on: Kerberos support
     TEST=off: Build and/or run tests
====> Options available for the group AUDIO
     ALSA=off: ALSA audio architecture support
     PULSEAUDIO=off: PulseAudio sound server support
     SNDIO=on: Sndio audio support
===> Use 'make config' to modify these settings

Possibly this needs to be discussed with chromium@FreeBSD.org?

[probonopd]

https://github.com/chromium/chromium/blob/master/chrome/browser/ui/views/frame/dbus_appmenu.cc suggests that there is/was global menu support in the Chromium source code.

How can it be activated?

https://github.com/chromium/chromium/blob/72ceeed2ebcd505b8d8205ed7354e862b871995e/chrome/browser/ui/views/frame/browser_desktop_window_tree_host_linux.cc#L32-L47

Can it be as easy as enabling USE_DBUS_MENU in the FreeBSD Makefile? That would be huge.

Possibly this needs to be discussed with chromium@FreeBSD.org?

[probonopd]

Upstream ticket: https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=259575

[jsm222]

Fwiw, Google Chrome does work with KDE Plasma's Global menu in KDE neon devedition...

Is this on FreeBSD? If it is then one is able to something with stock www/chromium. Also FWIW I tried to set use_dbus=true in the www/chromium Makefile with no effect. Perhaps it would be a plan to look into apps like evince and other app without a menubar. Or to dig down how kde did it, if they did it on FreeBSD

[probonopd]

No, the screenshot is from a LInux distribution @jsm222: https://neon.kde.org/

I tried to set use_dbus=true in the www/chromium Makefile with no effect

Looking at the Chromium source code, it seems to need USE_DBUS_MENU.

[jsm222]

No, the screenshot is from a LInux distribution @jsm222: https://neon.kde.org/

I tried to set use_dbus=true in the www/chromium Makefile with no effect

Looking at the Chromium source code, it seems to need USE_DBUS_MENU.

Yes, but that is set to true if use_dbus is set true. It is not an config setting on its own afaict

[probonopd]

Can you confirm that using use_dbus does result in a different binary? If so, it'd be nice if you could upload it somewhere for further analysis by me. Thanks!

[jsm222]

FWIW SHA1 (/var/cache/pkg/chromium-94.0.4606.81_1.pkg) = c27b9eb0b71d4e4141d192a6c50fac5f20116660 from Freebsd $ sha1 /usr/local/poudriere/data/packages/13amd64-main/All/chromium-94.0.4606.81_1.pkg SHA1 (/usr/local/poudriere/data/packages/13amd64-main/All/chromium-94.0.4606.81_1.pkg) = 5f6a2643f149026d9e50cc676994313bc18cb911

You should be able to download them from the repo described at https://wiki.freebsd.org/helloDesktop where you replace $abi with 13amd64-main

[probonopd]

Thanks @jsm222 unfortunately I can't run this on my FreeBSD 12.2 based system: getting Undefined symbol "rand@FBSD_1.6".

strings suggests there is at least some related code in there:

FreeBSD% strings ./usr/local/share/chromium/chrome | grep dbusmenu
/com/canonical/dbusmenu
com.canonical.dbusmenu

But the same is true for the "normal" chrome from the FreeBSD repo.

[jsm222]

Oh, ok I just checked the sums of the binaries themselfs, they are the same. I think if the buildsystem detects dbus it sets use_dbus automatically. But I will double check.

[probonopd]

Let's find out whether use_dbus really implies USE_DBUS_MENU.

[jsm222]

https://github.com/chromium/chromium/blob/72ceeed2ebcd505b8d8205ed7354e862b871995e/chrome/browser/ui/BUILD.gn#L3636 It looks like it to me

[jsm222]

With or without explicit setting of use_dbus=true defines becomes

    if (use_dbus && (use_x11 || ozone_platform_x11)) {
      sources += [
        "views/frame/dbus_appmenu.cc",
        "views/frame/dbus_appmenu.h",
        "views/frame/dbus_appmenu_registrar.cc",
        "views/frame/dbus_appmenu_registrar.h",
      ]
      defines += [ "USE_DBUS_MENU" ]
      deps += [ "//ui/gfx/x" ]
    }
print("MARK")
print(defines)
print("MARK")
<snip>

Output MARK ["USE_DBUS", "USE_DBUS_MENU"] MARK

[probonopd]

OK, so https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=259575 is currently not addressing the root of the issue and needs to be changed?

[jsm222]

OK, so https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=259575 is currently not addressing the root of the issue and needs to be changed?

Yes, you should probably close it..

[probonopd]

Closed.

Now we need to isolate why it's not working...

[jsm222]

on FreeBSD.. dbus-monitor | grep -i menu

   string "type='signal',interface='ca.desrt.dconf.Writer',path='/ca/desrt/dconf/Writer/user',arg0path='/org/appmenu/gtk-module/'"
   string "type='signal',interface='ca.desrt.dconf.Writer',path='/ca/desrt/dconf/Writer/user',arg0path='/org/appmenu/gtk-module/'"
   string "type='signal',interface='ca.desrt.dconf.Writer',path='/ca/desrt/dconf/Writer/user',arg0path='/org/appmenu/gtk-module/'"
   string "type='signal',interface='ca.desrt.dconf.Writer',path='/ca/desrt/dconf/Writer/user',arg0path='/org/appmenu/gtk-module/'"
   string "type='signal',interface='org.freedesktop.DBus',member='NameOwnerChanged',path='/org/freedesktop/DBus',sender='org.freedesktop.DBus',arg0='com.canonical.AppMenu.Registrar'"
   string "com.canonical.AppMenu.Registrar"
   string "Could not get owner of name 'com.canonical.AppMenu.Registrar': no such name"
   string "type='signal',sender='org.freedesktop.DBus',interface='org.freedesktop.DBus',member='NameOwnerChanged',path='/org/freedesktop/DBus',arg0='com.canonical.AppMenu.Registrar'"
   string "com.canonical.AppMenu.Registrar"
   string "Could not get owner of name 'com.canonical.AppMenu.Registrar': no such name"
   string "type='signal',interface='ca.desrt.dconf.Writer',path='/ca/desrt/dconf/Writer/user',arg0path='/org/appmenu/gtk-module/'"
   string "type='signal',interface='ca.desrt.dconf.Writer',path='/ca/desrt/dconf/Writer/user',arg0path='/org/appmenu/gtk-module/'"

on neon devel (linux)

method call time=1635797828.548305 sender=:1.56 -> destination=:1.53 serial=12503 path=/MenuBar/1; interface=com.canonical.dbusmenu; member=Event
method call time=1635797828.570915 sender=:1.56 -> destination=:1.53 serial=12504 path=/MenuBar/1; interface=com.canonical.dbusmenu; member=AboutToShow
method call time=1635797828.570996 sender=:1.56 -> destination=:1.53 serial=12505 path=/MenuBar/1; interface=com.canonical.dbusmenu; member=Event
method call time=1635797828.637894 sender=:1.56 -> destination=:1.53 serial=12506 path=/MenuBar/1; interface=com.canonical.dbusmenu; member=AboutToShow
method call time=1635797828.637988 sender=:1.56 -> destination=:1.53 serial=12507 path=/MenuBar/1; interface=com.canonical.dbusmenu; member=Event
method call time=1635797828.660185 sender=:1.56 -> destination=:1.53 serial=12508 path=/MenuBar/1; interface=com.canonical.dbusmenu; member=AboutToShow
method call time=1635797828.660271 sender=:1.56 -> destination=:1.53 serial=12509 path=/MenuBar/1; interface=com.canonical.dbusmenu; member=Event
method call time=1635797828.681647 sender=:1.56 -> destination=:1.53 serial=12510 path=/MenuBar/1; interface=com.canonical.dbusmenu; member=AboutToShow
method call time=1635797828.681728 sender=:1.56 -> destination=:1.53 serial=12511 path=/MenuBar/1; interface=com.canonical.dbusmenu; member=Event

[jsm222]

dbus-send --session --print-reply --dest=org.freedesktop.DBus / org.freedesktop.DBus.GetConnectionUnixProcessID string:com.canonical.AppMenu.Registrar gives the pid of /usr/bin/kded5 on neon, so that is what helps the menu magic apparently.. It is probably a lot of code..

[probonopd]

On helloSystem:

FreeBSD% dbus-send --session --print-reply --dest=org.freedesktop.DBus / org.freedesktop.DBus.GetConnectionUnixProcessID string:com.canonical.AppMenu.Registrar
method return time=1635799924.625188 sender=org.freedesktop.DBus -> destination=:1.152 serial=3 reply_serial=2
   uint32 1871

FreeBSD% ps ax | grep 1871
1871  -  S      0:51,66 /System/Menu.AppDir/AppRun (Menu)

I think the question is: What is causing the string "Could not get owner of name 'com.canonical.AppMenu.Registrar': no such name" ...

[probonopd]

@jsm222 mentioned in the chat:

I've got gobal menu for chrome on freebsd plasma export DBUS_SESSION_BUS_ADDRESS="unix:path=/tmp/dbus-FQqYijVekv" where you get the path from sockstat so chromium is capable also on FreeBSD to do the dbus menu thing

We have:

FreeBSD% env | grep DBUS
DBUS_SESSION_BUS_ADDRESS=unix:path=/tmp/dbus-qEy5CoDYoN,guid=54ade93d38f2020fd66560ca61823d80
DBUS_SESSION_BUS_PID=1670
DBUS_SESSION_BUS_WINDOWID=8388609

FreeBSD% sockstat | grep Menu                                         
user     Menu       1769  4  stream -> /tmp/.X11-unix/X0
user     Menu       1769  10 stream /tmp/qtsingleapp-Menu-ff2e-3e9
user     Menu       1769  30 stream -> /tmp/dbus-qEy5CoDYoN

Why isn't it working then?

Doing manually

export DBUS_SESSION_BUS_ADDRESS='unix:path=/tmp/dbus-qEy5CoDYoN'
chrome

does not lead to a change.

How exactly does Chrome determine whether a Global Menu is available on the system? We should be able to find this out by looking at the Chrome source code.

[jsm222]

I have looked into, under kde the fallback menu dbus adresses are set as window properties. the _KDE ones used by app-gtk-menu. It seems that chrome windows do not accept the change by app-gtk-menu lib done in XChangeProperty. Im still digging..

[probonopd]

Do you mean these?

https://github.com/helloSystem/Menu/blob/aaf84275a9eb1c3aed494bc30b8665b2afe9440c/src/appmenu/appmenumodel.cpp#L41-L42

Menu should be aware of them (although I have never fully understood why they are needed as a KDE-specific thing).

[jsm222]

I have looked into, under kde the fallback menu dbus adresses are set as window properties. the _KDE ones used by app-gtk-menu. It seems that chrome windows do not accept the change by app-gtk-menu lib done in XChangeProperty. Im still digging..

eral("_KDE_NET_WM_APPMENU_OBJECT_PATH");

Yes, they are only set under plasma5

[probonopd]

The plasma5-plasma-workspace package comes with:

FreeBSD% tar xfv ../plasma5-plasma-workspace-5.22.5.pkg
FreeBSD% find usr/local/share/dbus-1                                               
usr/local/share/dbus-1
usr/local/share/dbus-1/system-services
usr/local/share/dbus-1/system-services/org.kde.fontinst.service
usr/local/share/dbus-1/system.d
usr/local/share/dbus-1/system.d/org.kde.fontinst.conf
usr/local/share/dbus-1/services
usr/local/share/dbus-1/services/org.kde.KSplash.service
usr/local/share/dbus-1/services/org.kde.runners.baloo.service
usr/local/share/dbus-1/services/org.kde.plasma.Notifications.service
usr/local/share/dbus-1/services/org.kde.krunner.service
usr/local/share/dbus-1/services/org.kde.LogoutPrompt.service
usr/local/share/dbus-1/services/org.kde.fontinst.service
usr/local/share/dbus-1/services/org.kde.Shutdown.service
usr/local/share/dbus-1/interfaces
usr/local/share/dbus-1/interfaces/org.kde.kappmenu.xml
usr/local/share/dbus-1/interfaces/org.kde.KSplash.xml
usr/local/share/dbus-1/interfaces/org.kde.PlasmaShell.xml
usr/local/share/dbus-1/interfaces/org.kde.KSMServerInterface.xml
usr/local/share/dbus-1/interfaces/org.kde.krunner.App.xml
usr/local/share/dbus-1/interfaces/com.canonical.AppMenu.Registrar.xml

I never quite understood what those files are needed for - can't this kind of information be published over D-Bus itself ("introspection")? The concept of having to copy around xml files in the filesystem (in places only root can access) even though the files describe the per-user ("session") bus strikes me as strange.

And I am completely at a loss at how to handle the situation that more than one application (e.g., helloSystem Menu) would need(?) to provide the same file, /usr/local/share/dbus-1/interfaces/com.canonical.AppMenu.Registrar.xml.

In any case, just copying KDE's /usr/local/share/dbus-1/interfaces/com.canonical.AppMenu.Registrar.xml into the system doesn't suddenly make Chromium fill the global menu.

[probonopd]

xprop | APPMENU and then clicking on a window gives _KDE_NET_WM_APPMENU_OBJECT_PATH and _KDE_NET_WM_APPMENU_SERVICE_NAME for most windows but not for Chromium windows on helloSystem.

@jsm222 thinks that in KDE Plasma, something else sets those, and on helloSystem they get set for the wrong window(id).

[probonopd]

Let's see what deals with (the largely undocumented) _KDE_NET_WM_APPMENU_OBJECT_PATH...

FreeBSD% sudo grep -r _KDE_NET_WM_APPMENU_OBJECT_PATH /usr 2>/dev/null

# On helloSystem:
Binary file /usr/local/bin/gmenudbusmenuproxy matches
Binary file /usr/local/lib/libKF5WindowSystem.so.5 matches
Binary file /usr/local/lib/libKF5WindowSystem.so matches
Binary file /usr/local/lib/libkwin.so.5 matches
Binary file /usr/local/lib/libKF5WindowSystem.so.5.86.0 matches
Binary file /usr/local/lib/libkwin.so.5.22.5 matches
Binary file /usr/local/lib/qt5/plugins/platformthemes/libpanda-qtplugin.so matches

# On KDE Plasma:
Binary file /usr/local/lib/qt5/plugins/kf5/kded/appmenu.so matches
Binary file /usr/local/bin/gmenudbusmenuproxy matches

# On Airyx:
Binary file /System/Library/Frameworks/AppKit.framework/Versions/Current/libAppKit.so matches
Binary file /System/Library/Frameworks/AppKit.framework/Versions/A/libAppKit.so matches
Binary file /System/Library/Frameworks/AppKit.framework/libAppKit.so matches

So, is /usr/local/lib/qt5/plugins/kf5/kded/appmenu.so doing additional trickery that helps Chromium?

[jsm222]

Try this patch https://gist.github.com/jsm222/8b6a92566e7ce53bdc5ec094c1093549. Works for me on FreeBSD...

[probonopd]

Bravo! @jsm222 this is an awesome contribution. Thank you very, very much. I would never have figured this out.